摘要
目的探讨缺氧时视动眼震参数的变化。方法测定１８名健康男性学员，吸１１％低氧混合气２０ｍｉｎ前后视动眼震的各项参数。结果９名受试者在缺氧后慢相速度（ＳＰＶ）、快相速度（ＦＰＶ）和增益均明显降低；５名受试者缺氧前后所测指标无明显改变；４名受试者ＳＰＶ、ＦＰＶ和增益缺氧后明显增高。结论在缺氧条件下人的视动眼震反应是不一致的，存在个体差异。用眼震电图评定飞行人员前庭功能时，应考虑前庭功能在异常环境因素下的变化。
ObjectiveToexplorethechangeofslowphasevelocity(SPV)andfastphaseve-locity(FPV)ofoptokineticnystagmusinducedbysinusoidandacceleration/decelerationoptokineticstimulifolowinghypoxicexposure.MethodsEighteenhealthyyoungmenvolunteeredassubjects.Theyunderwenthypoxichypoxiabyinhaling11%lowoxygengasmixturefor20min.Parametersofoptokineticnystagmusweremeasuredbeforeandafterhypoxicexposure.ResultsIncomparisionwiththeinitialvalues,SPV,FPVandgainafterhypoxicexposureweredecreasedsignificantlyin9sub-jects,increasedsignificantlyin4subjects,anddidnotchangedin5.ConclusionTheresponseofop-tokineticnystagmusparameterstohypoxiaisdiferentindividualy.Furtherresearchinthisareamaybehelpfulforevaluatingpilotsvestibularfunction.
